Mobile device accessory with separate component for control or alert

ABSTRACT

The subject matter of this specification can be embodied in, among other things, a mobile device accessory includes a housing defining an attachment surface that is configured to engage a mobile device, a wearable component configured to be worn by a user of the mobile device, a separation detector configured to detect separation of the wearable component relative to the housing, and provide a signal when the wearable component becomes separated from the housing, and an alarm device configured to activate in response to the signal. Alternatively, the mobile device accessory may be a standalone device not designed to be attached to a mobile device.

TECHNICAL FIELD

The present disclosure relates to a mobile device accessory, for example, one that includes an alarm device for personal protection purposes.

BACKGROUND

Personal safety remains a challenge for essentially all people. Over the course of one's life, there may be situations in which he or she feels that his or her personal safety is at risk. Because many people now routinely carry a mobile device (e.g., a mobile phone), a person who believes that his or her personal safety is at risk can use the device to manually contact (e.g., by text message or phone call) someone else, for example, the police or other entity, to alert them to the person's current situation. In this way, help can be summoned to assist the person whose safety is at risk.

SUMMARY

In general, this document describes a mobile device accessory that includes, e.g., an alarm device for personal protection purposes.

In a first aspect, a mobile device accessory includes a housing defining an attachment surface that is configured to engage a mobile device, a wearable component configured to be worn by a user of the mobile device, a separation detector configured to detect separation of the wearable component relative to the housing, and provide a signal when the wearable component becomes separated from the housing, and an alarm device configured to activate in response to the signal.

Various embodiments can include some, all, or none of the following features. The attachment surface can be configured to engage a rear surface of the mobile device. The wearable device can be configured to separate from the housing when the wearable component exceeds a predetermined separation distance from the housing. The wearable component can include a lanyard having a predetermined length configured to mechanically attach to the housing, and configured to mechanically separate from the housing when a distance between the wearable component and the housing exceeds the predetermined length. The separation detector can include a connectivity sensor configured to determine whether the housing and the lanyard are mechanically separated. The wearable component can further include a wireless transmitter configured to transmit a wireless tether signal, and the separation detector further comprises a wireless receiver configured to receive the wireless tether signal at a received signal strength that is representative of a distance between the wearable component and the housing, and detect separation of the wearable component from the housing based on a comparison of the received signal strength to a predetermined signal strength defining a predetermined separation distance. The mobile device can be a mobile telephone. The alarm device can also include an audio output component disposed within the housing and configured to emit an audible alert when activated. The alarm device can be silent when activated. The alarm device can be configured to provide an alarm signal to the mobile device when the alarm device is activated. The mobile device accessory can include instructions stored in a memory device of the mobile device, that when executed by a data processing apparatus of the mobile device to perform operations including receiving, from the alarm device, the alarm signal,

and sending, in response to the received alarm signal, a communication to one or more recipients. The operations can also include determining, by the mobile device, a location of the mobile device, wherein the communication includes location data that is descriptive of the determined location. The housing can include an input mechanism, wherein the alarm device is further configured to be activated in response to actuation of the input mechanism. Actuation of the input mechanism can include movement of the input mechanism along a predefined non-linear path. The housing can envelop at least a portion of the mobile device. The housing can define a cavity sized to accommodate storage of the wearable component.

In a second aspect, a method includes engaging an attachment surface of a housing of a mobile device accessory to a mobile device, donning, upon a user of the mobile device, a wearable component, detecting, by a separation detector, that the wearable component has separated from the housing, and activating, based on detecting, an alarm device.

Various implementations can include some, all, or none of the following features. Detecting that the wearable component has separated from the housing can include detecting a mechanical separation of the housing and a lanyard affixed to the wearable component, the lanyard having a predetermined length and mechanically connecting the wearable component to the housing, the lanyard being mechanically separable from the housing when distance between the wearable component and the housing exceeds the predetermined length. Detecting that the wearable component has separated from the housing can include determining a signal strength of a wireless tether signal transmitted by a wireless transmitter of the wearable component to a wireless receiver arranged within the housing and in communication with the separation detector, the signal strength being representative of a distance between the wearable component and the housing, and determining that the signal strength is less than or equal to a predetermined signal strength defining a predetermined separation distance. Activating the alarm device can include transmitting an alarm signal, and the method can also include receiving, by mobile device, the alarm signal, and sending, by the mobile device and in response to the receiving the alarm signal, a predetermined communication to one or more predefined recipients. Activating the alarm device can include activating an audio output component disposed within the housing and configured to emit an audible alert when activated. The method can also include removing the wearable component from a cavity defined by the housing, wherein the cavity is sized to accommodate storage of the wearable component. The method can also include doffing the wearable component from the user, and stowing the wearable component in a cavity defined by the housing, wherein the cavity is sized to accommodate storage of the wearable component.

In a third aspect, a mobile device accessory includes (a) a housing defining an attachment surface that is configured to engage a mobile device, the engagement including both a physical attachment to the mobile device and a communications connection to the mobile device for controlling operation of the mobile device, (b) a wearable component configured to be worn by a user of the mobile device, and (c) control circuitry to control operation of the mobile device accessory, the control circuitry configured to perform operations including (i) detect that the wearable component has become separated from the mobile device accessory, and (ii) in response to the detection, cause the mobile device to perform one or more predetermined operations.

Various embodiments can include some, all, or none of the following features. The communications connection to the mobile device can be a wireless connection. The wireless connection can be a BLUETOOTH connection or any other similar or suitable wireless communication protocol. Controlling operation of the mobile device can include communicating with a software application executing on the mobile device. The control circuitry can include a processor and a memory containing machine instructions to be executed by the processor. The wearable component can include a lanyard component physically connected to the mobile device accessory. Detecting that the wearable component has become separated can include detecting a physical detachment between the wearable component and the mobile device accessory. The wearable component can include a detached component communicatively coupled to the mobile device accessory. Detecting that the wearable component has become separated can include either or both of detecting that a proximity between the wearable component and the mobile device accessory exceeds a predetermined distance, or that the wearable component (e.g., a strap or lanyard) has become physically separated from the accessory. Causing the mobile device to perform one or more predetermined operations can include causing an app executing on the mobile device to perform one or more of: initiating a communication with another communication device, activating a camera on mobile device, activating a microphone on the mobile device, emitting an audible sound, and turning on location detector. Initiating a communication with another communication device can include sending one or more predetermined messages to one or more predetermined recipients. The predetermined message can include one or more of a distress message, positioning coordinates, audio captured by mobile device, and video captured by the mobile device. Initiating a communication with another communication device can include initiating one or more of: a telephone call, an email, and a text message. The mobile device accessory can also include an audible alarm. The control circuitry can be configured to sound the audible alarm upon detecting that the wearable component has become separated from the mobile device accessory. The audible alarm can include predetermined spoken words. The audible alarm can include noise loud enough to attract attention from others in the vicinity of the mobile device.

In another configuration, the mobile device accessory is not designed to be attached to the mobile device but rather is implemented as a standalone device that can be carried and/or worn by a user (e.g., attached to the user's wallet or carried in the user's pocket, handbag, brief case, or backpack) of the mobile device. In this configuration, the mobile device accessory has (a) a communication mechanism configured to maintain a wireless communications connection between the mobile device accessory and the mobile device for controlling operation of the mobile device; (b) an activation mechanism (e.g., a button or a strap physically connected to the accessory) configured to be activated by a user; and (c) a control mechanism to control operation of the mobile device accessory, the control circuitry configured to perform operations including: (i) detect that the user has activated the activation mechanism; and (ii) in response to the detection, cause the mobile device to perform one or more predetermined operations. The mobile device accessory may further include an alarm mechanism configured to cause a human-perceptible alarm (e.g., loud sound and/or flashing light) in response to a detection that the user has activated the alarm mechanism. The activation mechanism may be a button that is pressable by the user or a wearable component (e.g., strap or lanyard) that is designed to be worn by the user or both. The activation mechanism is caused to be activated upon either of a press of a button on the accessory or a physical separation of the wearable component from the mobile device accessory.

The systems and techniques described here may provide one or more of the following potential advantages. For example, the mobile device accessory as described herein may provide protection for a user of the accessory who comes under attack or assault by another entity (e.g., another human or an animal) by performing one or more of the following actions upon activation of the accessory: causing the mobile device to perform an operation such as sending a message or call for help, turning on the mobile device's camera, microphone, speaker, light or the like, and/or emitting a human perceptible alarm designed to draw attention to the user and/or scare off the attacker.

Details of one or more implementations are set forth in the accompanying drawings and the description below. Other features and potential advantages will be apparent from the description and drawings, and from the claims.

DESCRIPTION OF DRAWINGS

FIG. 1 illustrates a perspective view of a mobile device accessory coupled to a mobile device.

FIG. 2 illustrates a side view of the mobile device accessory and mobile device of FIG. 1.

FIG. 3 illustrates an alternate perspective view of the mobile device accessory and mobile device of FIG. 1.

FIG. 4 illustrates an alternate perspective view of the mobile device accessory and mobile device of FIG. 1 wherein a power source of the mobile device accessory is removed.

FIG. 5 illustrates an alternate perspective view of the mobile device accessory and mobile device of FIG. 1 wherein a wrist strap of the mobile device accessory is in use.

FIG. 6 illustrates an alternate perspective view of the mobile device accessory and mobile device of FIG. 1 wherein a user separation sensor arrangement activates an alarm device.

FIG. 7 schematically illustrates components of the mobile device and the mobile device accessory of FIG. 1.

FIG. 8 illustrates an enlarged view of the switch of the mobile device accessory of FIG. 1.

FIG. 9 schematically illustrates components of the alarm device of FIG. 7.

FIG. 10 illustrates an embodiment of the mobile device accessory including the switch of FIG. 8.

FIG. 11 illustrates a mobile device accessory provided in the form of a case according.

FIG. 12 illustrates a mobile device accessory wherein the mobile device accessory is substantially rectangular with rounded comers.

FIG. 13 illustrates a mobile device accessory wherein the mobile device accessory is round.

FIG. 14 illustrates a mobile device accessory wherein the user separation sensor arrangement includes a wireless wearable component.

FIGS. 15-18 illustrate a mobile device accessory wherein the mobile device accessory is ovular.

FIG. 19 illustrates a mobile device accessory wherein a wearable component of the user separation sensor arrangement is not attached for illustration purposes.

FIG. 20 illustrates a mobile device accessory wherein a mobile device is not attached for illustration purposes.

FIG. 21 illustrates a mobile device accessory wherein the mobile device accessory is attached to a case for the mobile device.

FIGS. 22A-F illustrate steps associated with usage of a wrist strap of the mobile device accessory of FIG. 21.

FIG. 23 illustrates a personal safety device that does not require usage of a separate mobile device.

FIG. 24 illustrates a rear view of a mobile device accessory coupled to a mobile device and including a nail slot.

FIG. 25 illustrates a perspective view of a mobile device accessory and mobile device of FIG. 24.

FIG. 26 illustrates an alternate perspective view of the mobile device accessory and mobile device of FIG. 24.

FIG. 27 illustrates a rear view of a mobile device accessory coupled to a mobile device and including an enlarged nail slot.

FIG. 28 illustrates a perspective view of the mobile device accessory and mobile device of FIG. 27.

FIG. 29 illustrates a perspective side view of another example mobile device accessory.

FIG. 30 illustrates a front view of the example mobile device accessory of FIG. 29.

FIG. 31 illustrates a top perspective view of the example mobile device accessory of FIG. 29.

FIG. 32 illustrates an alternate top perspective view of the example mobile device accessory of FIG. 29.

FIG. 33 illustrates a bottom perspective view of the example mobile device accessory of FIG. 29.

FIG. 34 illustrates an alternate bottom perspective view of the example mobile device accessory of FIG. 29.

FIG. 35 illustrates perspective rear view of the example mobile device accessory of FIG. 29.

FIG. 36 is a flow chart of an example process for using an example mobile device accessory.

DETAILED DESCRIPTION

This document describes systems and techniques for providing personal protection in the form of an alarm accessory for a mobile device. In general, a mobile device, e.g., a cellular telephone (phone) or a mobile phone, can be modified (e.g., attached to an accessory and/or through the use of specialized software on the mobile device), to respond to one or more predetermined conditions to automatically, and/or with user interaction, trigger an alarm and thereby draw attention to that person's present circumstances in order to seek help and/or scare away a potential threat. Accordingly, this document describes, among other things, an accessory that can be attached to the mobile device and provide enhanced safety functionality to a user of the mobile device. Various configurations of such a mobile device accessory and its use are described herein, and may include various combinations of the following features and/or functionality. The accessory may be embodied in many different forms and should not be construed as limited to the implementations set forth herein. As used in the specification, and in the appended claims, the singular forms “a”, “an”, “the”, include plural variations unless the context clearly dictates otherwise.

As illustrated in FIGS. 1-6, the present disclosure relates to a mobile phone accessory 100, also referred to a mobile device accessory. The mobile phone accessory 100 may be configured for use with a mobile device such as mobile phone 200 or other mobile device (e.g., tablet computer, notebook computer, etc.). In particular, the mobile phone accessory 100 may be configured to engage (e.g., adhere to or otherwise be physically joined to) the mobile phone 200. The mobile phone accessory 100 may be configured to engage any portion of the mobile phone 200, such as the rear surface of the housing of the mobile phone 200.

In one implementation, the mobile phone accessory 100 may include a housing 102. The housing 102 may define an attachment (e.g., locking) surface 104 (see, FIG. 2) and an outer surface 106 (see, e.g., FIG. 1). As illustrated in FIG. 2, the attachment surface 104 may be configured to engage a rear surface 202 of the mobile phone 200 opposite from a front surface 204 at which a display is positioned. Thereby, the mobile phone accessory 100 does not block the display in this configuration. Further, the mobile phone accessory 100 may occupy less than an entirety of an area of the rear surface 202 of the mobile phone 200. Thereby, the mobile phone accessory 100 may not block any rear-facing camera thereon. Further, by providing the mobile phone accessory 100 with a relatively small size, the mobile phone accessory may be attached to mobile phones with differing sizes and shapes. Further, the mobile phone accessory 100 may be configured to not extend to the edges of the mobile phone 200, such that an edge protecting case may be employed with the mobile phone. As may be understood, the mobile phone accessory may also be configured to engage a case for the mobile phone that includes a rear portion that covers the rear surface (see, e.g., FIGS. 21 and 22). In another embodiment, the mobile phone accessory may itself comprise a case for the mobile phone (see, e.g., FIG. 11).

The attachment surface 104 of the housing 102 may be configured to substantially permanently engage the rear surface 202 of the mobile phone 200, or a case positioned at the rear surface as noted above. For example, the mobile phone accessory 100 may include an adhesive at the attachment surface 104 configured to adhere to the rear surface 202 of the mobile phone 200. Thereby, the mobile phone accessory 100 may be configured for use over the lifetime of the mobile phone 200, thereby ensuring that the mobile phone accessory is available at all times the mobile phone is in the user's possession. Alternatively, the attachment surface 104 of the housing 102 may be configured to releasably engage (e.g., using a slot-tab arrangement, or hook and loop connecting surfaces such as VELCRO®) the rear surface 202 of the mobile phone 200, or a case positioned at the rear surface as noted above.

As illustrated in FIG. 4, the mobile phone accessory 100 may include a power source 108, which may be a battery. Further, the housing 102 may include a battery portion 110 that is configured to receive the power source 108. The battery portion 110 may be removable to allow for replacement of the power source 108. The power source 108 may be configured to provide electrical power to each of the components of the mobile phone accessory 100 such that the mobile phone accessory is self-powered. However, as may be understood, in another implementation the mobile phone accessory may be configured to receive electrical power from the mobile phone. For example, the mobile phone accessory may include a connector that engages a power port or a headphone jack on the mobile phone. Alternatively, or in addition, the mobile phone accessory may draw power from the phone wirelessly via a technique akin to QI® inductive charging, but in reverse.

Additional control circuitry components of the mobile phone accessory 100 and the mobile phone 200 are schematically illustrated in FIG. 7. As illustrated, the mobile phone accessory 100 includes an alarm device 112, which may be at least partially received in the housing 102. The alarm device 112 is in communication with the mobile phone 200 (e.g., BLUETOOTH, USB) for providing signals to the mobile phone 200, for example, to request, trigger, command, or otherwise control at least some operation or actions of the mobile phone 200. The alarm device 112 may include an audio output device 114 such as a speaker and a light output device 116 such as a light emitting diode (LED) or xenon strobe. Example positions and configurations of the audio output device 114 and the light output device 116 are illustrated in FIGS. 1 and 3-6.

As further illustrated in FIG. 7, the control circuitry of the mobile phone accessory 100 includes a user separation sensor arrangement 118 (e.g., proximity detector). The user separation sensor arrangement 118 may include a wearable component 120 configured to engage (e.g., donned by, worn by) a user and a connectivity sensor 122 engaged with the housing 102 and in communication with the alarm device 112. The alarm device 112 may be configured to activate and/or perform one or more predetermined operations in response to the connectivity sensor 122's determining that the wearable component 120 exceeds a threshold separation distance therefrom, and/or has become detached (e.g., mechanically separated) from the mobile accessory 100, e.g., providing an alarm signal to indicate that separation between the mobile accessory 100 and the wearable component 120 has occurred, in response to which one or more actions can occur—e.g., sounding an audible alarm on the accessory, emitting light from a light source on the accessory, cause the attached phone's flash light to turn on or strobe, cause the attached phone to transmit a message via text and/or phone call, cause the mobile phone to emit sound, cause the mobile phone to take photos or begin recording video, either through the forward-facing camera or the rearward-facing camera or the both, or otherwise any operation within the attached phone's functionalities. Note that any phone-based action could be achieved by the accessory's transmitting to the mobile phone that an alarm condition has been detected, e.g., in response to the user's pushing a button on the accessory, or in response to the proximity between the accessory and the wearable component being exceeded and/or in response to the wearable component being mechanically disconnected from the accessory.

With regard to the latter, as illustrated in FIG. 5, in one embodiment the wearable component 120 may comprise a wrist strap. Initially, the connectivity sensor 122 and the wearable component 120 of the user separation sensor arrangement 118 may be physically connected. For example, as illustrated in FIG. 5, a lanyard 124 (e.g., mechanical tether) may connect the wearable component 120 to the housing 102 via a connector 126.

As noted above, the alarm device 112 may be activated in response to receipt of a signal generated by the separation sensor arrangement 118 when the user separation sensor arrangement 118 determines that the wearable component 120 has become physically detached from the accessory, and/or exceeds a threshold separation distance from the connectivity sensor 122. Thereby, the threshold separation distance may be defined between the housing 102 and the wearable component 120. Thus, for example, the lanyard 124 may have a predetermined length that at least partially defines the threshold distance, and the lanyard may be configured to mechanically and/or electrically attach to the housing 102 and separate from the housing 102 when the distance between the wearable component 120 and the housing 102 exceeds the predetermined length of the lanyard 124. The separation sensor arrangement 118 can include a connectivity sensor configured to determine whether the housing 102 and the lanyard are mechanically and/or electrically separated and provide an alarm signal in response.

As illustrated in FIG. 6, when a user's wrist to which the wearable component 120 is attached moves away from the housing 102 of the mobile accessory device 100 by a distance exceeding the length of the lanyard 124, the lanyard may pull out (e.g., separate, break away) the connector 126 from the housing 102 and out of engagement with the connectivity sensor 122, thereby activating the alarm device 112 (see, FIG. 7).

Further, in one embodiment the connector 126 may include a whistle. Thereby, once the connector 126 is removed from the housing 102, the user may blow on the whistle to bring attention to the user's circumstances, scare away an assailant, and/or summon help.

In an alternate embodiment, the connector extending from the wearable component may be configured to engage a power and/or data port of the mobile phone or a headphone jack thereon. In this embodiment, the mobile phone may itself (e.g., via a software application executing on the mobile phone) detect detachment or separation of the wearable component from the port or jack, thereby activating the alarm device.

As schematically illustrated in FIG. 7, the mobile phone accessory 100 may also include a switch 128. The switch 128 may be provided in addition to, or as an alternate for, the user separation sensor arrangement 118. In a preferred embodiment, both the user separation sensor arrangement 118 and the switch 128 are provided.

An example embodiment of the switch 128 is illustrated in FIGS. 1 and 3-6. In some embodiments it may be desirable to provide the switch 128 with features configured to prevent accidental actuation thereof so as to avoid accidental activation of the alarm device 112 (see, FIG. 7). In this regard, in some embodiments actuation of the switch 128 may require movement of the switch along a non-linear path. For example, FIG. 8 illustrates an enlarged example embodiment of an embodiment of the switch 128A. As illustrated, the switch 128A may include a center button 130 and an outer slider 132. In order to activate the switch 128A, a user may slide the slider 132 in order to depress the center button 130. Thereby, issues with respect to accident actuation of the switch 128A may be mitigated. Various other switches requiring multi-stage actuation may be provided in other embodiments.

The alarm device 112 may be configured to be activated in response to a signal from the user separation sensor arrangement 118 and/or the switch 128. The particular response by the alarm device 112 may be set as desired. In some embodiments activation of the alarm device 112 by the switch 128 may result in the same response as activation of the alarm device by the user separation sensor arrangement 118. However, in other embodiments activation of the alarm device 112 by the switch 128 may result in a different response as compared to activation of the alarm device by the separation sensor 118.

For example, the alarm device 112 may be configured to output an audible alarm configured to output sounds, predetermined spoken words, and/or noises (e.g., siren, buzzer, bell, speech) that are loud enough to attract attention from others in the vicinity of the mobile phone 200 when the user separation sensor arrangement 118 determines that the threshold separation distance is exceeded. In this regard, one or both of the audio output device 114 and the light output device 116 may be activated. However, in some configurations, the alarm device 112 may be silently activated when the switch 128 is actuated. In this regard, the alarm device 112 may be configured to direct the mobile phone 200 to send a communication (e.g., a telephone call, an SMS text message, an instant message, and email) to one or more predefined recipients in response to actuation of the switch 128. In some implementations, the communication can include one or more predetermined messages (e.g., pre-recorded voice message, pre-configured text or synthesized voice message). In some implementations, the communication can be sent to one or more predetermined recipients (e.g., emergency response center, 911, police, user contacts). The alarm device 112 may be configured to direct the mobile phone 200 to send a communication to one or more predefined recipients when the user separation sensor arrangement 118 determines that the threshold separation distance from the wearable component 120 is exceeded, and/or that the wearable component 120 has become detached from the accessory 100.

The alarm device 112 may be configured to direct the mobile phone 200 to activate a camera (e.g., to capture still or motion video of the surroundings), microphone (e.g., to capture sounds in the surrounding environment), position location detector system (e.g., GPS or other location system to identify a local or global location of the phone), light output system to emit a visual indicator (e.g., blink an onboard LED, flash the phone's screen), and/or audio output system (e.g., built-in speaker of the phone, to emit an audible alarm or call for help) of the mobile phone 200, In some implementations, the communication can include one or more of a distress message, positioning coordinates (e.g., based on a GPS sensor in the mobile device), audio captured by mobile device, and video captured by the mobile device. The functionality of being able to send a communication in response to an alarm or other predetermined condition may be implemented by specialized software installed on and executed by the mobile device, for example, a downloadable software application (e.g., app) or other software component.

To transmit such notifications, as schematically illustrated in FIG. 7, the mobile phone accessory 100 may further comprise a communication interface 134. The communication interface 134 may be configured to communicate with a communication interface 206 of the mobile phone 200 when directed by the alarm device 112. The communication interface 134 of the mobile phone accessory 100 and the communication interface 206 of the mobile phone 200 may be any suitable arrangement, such as a device or circuitry embodied in either hardware, software, or a combination thereof that is configured to receive and/or transmit data. The communication interfaces 134, 206 may be configured to receive and/or transmit data via a wired or wireless connection. In this regard, the communication interfaces 134, 206 may include, for example, an antenna and supporting wireless transmitter, receiver, or transceiver hardware and/or hardwired components and/or software. For example, the communication interface 134 of the mobile phone accessory 100 may include a wireless transmitter, receiver, or transceiver configured to communicate with the communication interface 206 of the mobile phone 200 via BLUETOOTH, photonic (e.g., infrared, IRDA), acoustic, ultrasonic, ZigBee, WiFi, or any other appropriate communication format. Further, the communication interface 206 of the mobile phone 200 may be configured to communicate with one or more cellular networks via any known communication standard.

Thereby, the communication interface 206 of the mobile phone 200 may send a communication to one or more designated contacts. The designated contacts may be selected by the user via a user-installable software application that may be loaded on the mobile phone 200. The type and/or content of the message may also be configured within the application.

In some embodiments, the communication may include a phone call with an audible message. For example, a prerecorded message may be played to convey a request for help. Alternatively or additionally, the mobile phone 200 may activate a microphone 208 thereof such that a recipient of the call may receive audio relating to the user of mobile phone accessory's circumstances (e.g., voice or other sounds corresponding to words or actions of the mobile phone user or anyone or anything else within the range of the mobile phone's microphone 208).

In some embodiments, the communication may include a text message, an email, or any other electronic communication. Thereby, the communication may include, for example, a message conveying a request for help and/or instructing the recipient to call police or other emergency services. The communication may also include location data regarding a position of the mobile phone 200. For example, the mobile phone 200 may further include a positioning system sensor 210 (e.g., GPS, GLONASS, indoor positioning), which may determine a location thereof, and such location information may be included in the communication transmitted by the communication interface 206 of the mobile phone. For example, the recipients of the communication may be provided with an image showing the position of the mobile phone 200 and/or a link to a map showing the position. Such a map may be updated with the positon of the mobile phone 200 such that the position thereof may be tracked in the event that movement occurs. Thereby, emergency service personnel may be directed to the location of the mobile phone 200.

In another embodiment, communications may additionally or alternatively be transmitted to other users of mobile accessory devices in local proximity to the mobile phone accessory 100. For example, the communication interface 134 of the mobile phone accessory 100 may directly communicate with the communication interface of other nearby mobile phone accessories to alert their users of a nearby user in need of assistance. In some embodiments the mobile phone accessories 100 may form a mesh network via the communication interfaces 134 to expand the reach of the local alerts.

FIG. 9 schematically illustrates control circuitry components of the alarm device 112 according to an embodiment of the present disclosure. As illustrated, the control circuitry of the alarm device 112 may include or otherwise be in communication with a processor 136 and a memory device 138.

The processor 138 may be embodied in a number of different forms. For example, the processor 136 may be embodied as one or more of various processing means such as a coprocessor, a microprocessor, a controller, a digital signal processor (DSP), processing circuitry, or various other processing devices including integrated circuits such as, for example, a special-purpose computer chip, or other hardware processor. In an example embodiment, the processor 136 may be configured to execute instructions stored in the memory device 138 or otherwise accessible to the processor. Alternatively or additionally, the processor 136 may be configured to execute hard coded functionality. As such, the processor 136 may be capable of performing operations according to embodiments of the present disclosure while configured accordingly. Alternatively, when the processor 136 is embodied as an executor of software instructions, the instructions may specifically configure the processor to perform the operations described herein. The processor 136 may include a clock, an arithmetic logic unit (ALU) and logic gates configured to support operation of the processor, amongst other components.

The memory device 138 may include non-transitory and tangible memory that may be, for example, volatile and/or non-volatile memory. The memory device 138 may be configured to store information, data, files, applications, instructions or the like. For example, the memory device 138 can be configured to buffer input data for processing by the processor 136. Additionally or alternatively, the memory device 138 can be configured to store instructions for execution by the processor 136.

The processor 136 may be configured to execute program code instructions stored on a non-transitory computer readable medium. In this regard, an embodiment of a non-transitory computer readable medium for storing computer instructions executed by a processor (e.g., processor 136) is provided, such as the memory device 138. The non-transitory computer readable medium may comprise program code instructions for performing the alarm operations described herein.

The various aspects, embodiments, implementations or features of the described embodiments can be used separately or in any combination. Various aspects of the described embodiments can be implemented by software, hardware or a combination of hardware and software. The described embodiments can also be embodied as computer readable code on a computer readable medium for controlling the above-described operations. In particular, computer readable code may be configured to perform each of the operations of the methods described herein and embodied as computer readable code on a computer readable medium for controlling the above-described operations. In this regard, a computer readable storage medium, as used herein, refers to a non-transitory, physical storage medium (e.g., a volatile or non-volatile memory device, which can be read by a computer system. Examples of the computer readable medium include read-only memory, random-access memory, CD-ROMs, DVDs, magnetic tape, and optical data storage devices. The computer readable medium can also be distributed over network-coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

Although the present disclosure is generally described as relating to a mobile phone accessory, in another embodiment some or all of the components of the mobile phone accessory described above may be included in a standalone personal safety device (see, e.g., FIG. 23). In other words, a personal safety device may be configured for use without requiring a separate mobile phone. In this regard, the personal safety device may be configured to communicate with cellular networks and configured to determine a location of the personal safety device. Thus, for example, the communication interface may be configured to communicate with cellular or satellite networks in order to allow for transmission of electronic communications and the personal safety device may further include a GPS sensor configured to determine the location of the personal safety device.

As noted above, the form factor of the mobile phone accessory 100 may vary. In this regard, FIG. 10 illustrates an embodiment of the mobile phone accessory 100A including the switch 128 of FIG. 8. FIG. 11 illustrates an embodiment of the mobile phone accessory 100B provided in the form of a case. FIG. 12 illustrates an embodiment of the mobile phone accessory 100C wherein the mobile phone accessory is substantially rectangular with rounded corners. FIG. 13 illustrates an embodiment of the mobile phone accessory 100D wherein the mobile phone accessory is round. FIG. 14 illustrates an embodiment of the mobile phone accessory 100E wherein the user separation sensor arrangement includes a wireless wearable component 120D. FIGS. 15-18 illustrate an embodiment of the mobile phone accessory 100F wherein the mobile phone accessory is ovular. FIG. 19 illustrates an embodiment of the mobile phone accessory 100G wherein the wearable component of the user separation sensor arrangement is not attached for illustration purposes. FIG. 20 illustrates an embodiment of the mobile phone accessory 100H wherein a mobile phone is not attached for illustration purposes. FIG. 21 illustrates an embodiment of the mobile phone accessory 100I wherein the mobile phone accessory is attached to a case 208 for the mobile phone 200.

In examples such as the mobile accessory device 100E and the wearable component 120D of FIG. 14, the connection between the wearable component 120D and the mobile device accessory 100E may be wireless. For example, the connection may be a radio frequency connection (e.g., BLUETOOTH connection), a photonic connection (e.g., infrared beacon, IrDA), sonic (e.g., ultrasonic beacon), or magnetic (e.g., a Hall sensor in the mobile device accessory activated when a magnet in the wearable component is moved too far away).

In some embodiments, the separation sensor arrangement 118 can be configured to measure or otherwise detect a strength of a wireless signal provided by the wearable component. The strength of the signal can be proportional or otherwise representative of the distance between the wearable component and the separation sensor arrangement 118 (e.g., the larger the separation distance, the weaker the received signal will be). The separation sensor arrangement 118 can compare the strength of the received signal to a predetermined threshold signal strength value. If the received signal strength is determined to be less than the threshold signal strength value, the separation sensor arrangement 118 can provide an activation signal to the alarm device 112. In some embodiments, the separation sensor arrangement 118 may be configured to detect the presence and/or absence of a beacon signal, and the threshold signal strength value can be a timeout value. For example, the wearable component 100D can be configured to emit a beacon signal once every second, and the threshold signal strength value can be set to five seconds. In this example, the separation sensor arrangement 118 can determine that no beacon signal has been received for at least five seconds, and respond by determining that the wearable component 100D is no longer in proximity (and/or physically attached) to the mobile accessory device 100E and provide an activation signal to the alarm device 112.

FIGS. 22A-F illustrate steps associated with usage of a wrist strap 120I of the mobile phone accessory 100I of FIG. 21. FIG. 22A shows a mobile phone 200 having an attached (e.g., adhesively, with tabs/slots, or hooks and loops) mobile device accessory 100I. The microphone of the mobile device 200 is shown at 208. The mobile device accessory 100I includes a groove 209 defined in the surface of the mobile device accessory 100I, sized to accommodate storage of the wearable component 120I. FIGS. 22B-D show a user in the process of removing the wearable component 120I from the groove 209 so that he or she can engage the wearable component 120I into a worn position, such as shown in FIG. 22E (e.g., donned upon a wrist). FIG. 22F illustrates how the user might hold mobile device 200 after he or she has removed wearable component 120I form the groove 209 and put it around his or her wrist. The user can later remove (e.g., doff) the wearable component 120I and stow it in the groove 209.

FIG. 23 illustrates an embodiment of a personal safety device 300 that does not require usage of a separate mobile phone, but rather is implemented as a standalone, dedicated personal safety device. Such a personal safety device 300 may have sufficient components and functionalities to perform the operation

Further, FIGS. 24-26 illustrate an embodiment of the mobile phone accessory 100J according to an additional example embodiment of the present disclosure. The mobile phone accessory 100J is illustrated as being attached to the mobile phone 200 as discussed above. The overall configuration and features of the mobile phone accessory 100J may be substantially similar to that of the mobile phone accessory 100 of FIG. 1. However, the mobile phone accessory 100J of FIGS. 24-26 may vary in one or more respects.

For example, as illustrated, the position of the components of the mobile phone accessory 100J relative to the housing 102J may vary. In this regard, the light output device 116J may be positioned at a top center of the outer surface 106J of the housing 102J. This configuration may allow the light output device 116J to be exposed and visible above the top of the user's hand in the event of activation while in the user's hand, such that it is more noticeable. The audio output device 114J may be positioned in a similar location as compared to the audio output device 114 of the mobile phone accessory 100 of FIG. 1, but the housing 102J may include a pattern of round holes defined there through that allow sounds to exit the mobile phone accessory 100J. Further, the switch 128J may be substantially similar to the switch 128A described above with respect to FIG. 8, but the ends thereof may be relatively more rounded for improved ergonomics and/or appearance. Additionally, the battery portion may be positioned at the attachment surface of the mobile phone accessory 100J engaged with the mobile phone 200 in order to de-clutter the exposed outer surfaces thereof.

Further, the mobile phone accessory 100J may include a nail slot 140J, which may be positioned between the connector 126J and the housing 102J. In this regard, in some embodiments the user separation sensor arrangement may be activated by engaging a fingernail in the nail slot 140J and releasing the connector 126 rather than requiring the user to release the wearable component 120J first. Thereby, activation of the user separation sensor arrangement may be conducted quickly (e.g., in an unexpected dangerous situation), if necessary.

Further, the particular configuration of the wearable component 120J may differ. In this regard, as illustrated in FIGS. 24-26, in an un-extended configuration, the lanyard 124J may wrap around a lower corner of the housing 102J and extend to and wrap around a top corner of the housing. The wearable component 120J may then extend downward from the lanyard 124J to the bottom edge of the housing 102J. A clip 142J may be positioned at the interface between the lanyard 124J and the wearable component 120J. In some embodiments, the clip 142J may be moveable such that the relative length of the wearable component 120J relative to the lanyard 124J is adjustable and thereby a user may tighten the wearable component around his or her wrist during use. The clip 142J may be configured to engage the housing 102J when in an un-extended configuration to retain the lanyard 124J in place.

Further, the wearable component 120J may include a pull tab 144J at an end thereof. The pull tab 144J may retain the wearable component 120J in the un-extended configuration until the user releases the pull tab from engagement with the housing 102J. Releasing the pull tab 144J from engagement with the housing 102J may activate one or more features. For example, in response to the pull tab 144J being released, the positioning system sensor 210 (see, FIG. 7) may be instructed to activate via the communication mechanisms described above. Accordingly, when a user extends the wearable component 120J and places it on his or her wrist, for example when confronted with a dangerous situation or location, the user's location may be determined and tracked at that time. Thereby, in the event that the user pulls out the connector 126J, the positioning system sensor 210 will have already been activated in order to substantially immediately provide the user's location as described above. Thereby, for example, any delays associated with determining the user's location may be avoided. Further, the user's location may be tracked during the time period during which the pull tab 144J is released and thereby the user's location information may optionally be shared with one or more persons, if desired.

The embodiment of the mobile phone accessory 100K illustrated in FIGS. 27 and 28 is substantially similar to the mobile phone accessory of FIGS. 24-26 in most respects and hence the configuration thereof will not be repeated. However, the nail slot 140K is enlarged.

FIGS. 29-35 illustrate various views of another example mobile device accessory 100I according to an additional example embodiment of the present disclosure. The mobile phone accessory 100L is configured to be attached to the mobile phone 200 as will be discussed further below. The overall configuration and features of the mobile phone accessory 100L may be substantially similar to that of the mobile phone accessory 100 of FIG. 1. However, the mobile phone accessory 100L of FIGS. 29-35 may vary in one or more respects.

For example, as illustrated, the position of the components of the mobile phone accessory 100L relative to the housing 102L may vary. The audio output device 114L may be positioned in a similar location as compared to the audio output device 114 of the mobile phone accessory 100 of FIG. 1, but the housing 102L may include a round hole defined there through that allow sounds to exit the mobile phone accessory 100L.

Further, the particular configuration of the wearable component 120L may differ. In this regard, as illustrated in FIGS. 29-35, in an un-extended configuration, wearable component 120L and the lanyard 124L may be stow-able in a groove 2909 formed about the periphery of the housing 102L. Further, the wearable component 120L may include a pull tab 144L at an end thereof. The pull tab 144L may retain the wearable component 120L in the stowed (e.g., un-extended) configuration until the user releases the pull tab 144L from engagement with the housing 102L. Releasing the pull tab 144L from engagement with the housing 102L may activate one or more features. For example, in response to the pull tab 144L being released, the positioning system sensor 210 (see, FIG. 7) may be instructed to activate via the communication mechanisms described above. Accordingly, when a user removes the wearable component 120L from the groove 2909 and places it on his or her wrist, for example when confronted with a dangerous situation or location, the user's location may be determined and tracked at that time. Thereby, in the event that the user pulls out the connector 126L, the positioning system sensor 210 will have already been activated in order to substantially immediately provide the user's location as described above. Thereby, for example, any delays associated with determining the user's location may be avoided. Further, the user's location may be tracked during the time period during which the pull tab 144L is released and thereby the user's location information may optionally be shared with one or more persons, if desired.

Further, the switch 128L may be a pressure sensitive or membrane switch defined as a fingertip-sized recess having a textured pattern (e.g., to ease identification and location of the switch 128L by either sight or touch). In use, the switch may be used to activate an alarm though a predetermined continuous press (e.g., three seconds) or through a predetermined series of presses (e.g., three presses within five seconds), for example, to reduce the occurrence of accidental activation. In some implementations, the switch 128L may activate a different type of alarm than may be triggered by separation of the lanyard. For example, the mobile device accessory 100L may respond to activation of the switch 128L by initiating a silent alarm to alert one or more predetermined recipients (e.g., discretely sending a message to a preselected contact), while the mobile device accessory 100L may respond to separation of the connector 126L by initiating an audible alarm and alerting one or more predetermined recipients (e.g., set off a siren and send a message or place a phone call to police).

Further, the mobile phone accessory 100L may include a nail slot positioned between the connector 126L and the housing 102L. In this regard, in some embodiments the user separation sensor arrangement may be activated by engaging a fingernail in the nail slot and releasing the connector 126L rather than requiring the user to release the wearable component 120L first. Thereby, activation of the user separation sensor arrangement may be conducted quickly (e.g., in an unexpected dangerous situation), if necessary.

The mobile device accessory 100L also includes a visual indicator 2902 (e.g., a light, a display). The visual indicator 2902 is configured to provide a visible indication of one or more statuses of the mobile device accessory. For example, the visual indicator 2902 may blink at a first rate or pattern (e.g., or illuminate steadily), illuminate at a first brightness, and/or illuminate with a first color to display a first condition (e.g., to indicate that the mobile device accessory 100L is connected to or paired with the mobile phone 200 and/or an associated alarm software application running on the phone), and blink, illuminate, and/or colorize in different predetermined manners to display other conditions (e.g., to indicate that the mobile device accessory 100L is not paired or otherwise communicatively associated with mobile phone 200, to indicate that the mobile device accessory 100L is not able to communicate with the mobile phone 200 to which it was previously paired or otherwise communicatively associated). In some embodiments, the visual indicator 2902 may display differently shaped predetermined patterns to indicate different conditions of the mobile device accessory 100L. For example, the visual indicator 2902 may appear as a periodically blinking, blue BLUETOOTH symbol to indicate that the mobile device accessory 100L is ready for pairing, and may appear as a red “X” when the mobile device accessory 100L is not able to communicate with the paired mobile phone 200 or an associated software application installed thereupon and configured to respond to alarm signals from the mobile device accessory 100L.

Referring now to FIG. 35, a rear perspective view of the mobile device accessory 100L is shown. The rear side of the housing 102L includes an adhesive pad 3502. In use, the adhesive pad 3502 can be contacted against a surface of the mobile phone 200 (e.g., the rear surface 202).

FIG. 36 is a flow chart of an example process 3600 for using an example mobile device accessory. In some implementations, the process 3600 can be performed using one or more of the example mobile device accessories 100A-100L of FIGS. 1-23, and 25-35, and the personal safety device 300 of FIG. 23.

At 3610, an attachment surface of a housing of a mobile device accessory is engaged to a mobile device. For example, the attachment surface 104 of the housing 102 may be configured to engage the rear surface 202 of the mobile phone 200. In another example, the adhesive pad 3502 shown in FIG. 35 can be used to secure the mobile device accessory 100L to a mobile device, such as to the rear surface 202 of the mobile device 200.

At 3620, a wearable component is donned upon a user of the mobile device. For example, the wearable component 120 of FIG. 5, the wireless wearable component 120D of FIG. 14, and/or the wrist strap 120I of FIGS. 22A-F can be worn about a user's wrist. In other examples, the wearable component can donned upon or otherwise carried by a user (e.g., a pendant, a ring, an earring, an earpiece, bracelet, wristwatch, eyeglass frame, hair clip), the user's clothing (e.g., a remote unit carried in the user's pocket, a pin, a badge, clipped to a belt, a belt buckle, head band, hat), and/or the user's personal effects (e.g., a remote unit carried in purse or bag, a key fob, an identification card).

At 3630, a separation detector detects that the wearable component has separated from the housing. For example, the connectivity sensor 122 can determine that the wearable component 120 has exceeded a threshold separation distance from the alarm device 112 and/or that the wearable component 120 has become physically detached from the mobile device accessory 100.

In some embodiments, the process 3600 can include detecting a mechanical separation of the housing and a lanyard affixed to the wearable component, the lanyard having a predetermined length and mechanically connecting the wearable component to the housing, the lanyard being mechanically separable from the housing when distance between the wearable component and the housing exceeds the predetermined length. For example, the connectivity sensor 122 can determine that the wearable component 120 has become detached, disengaged, or otherwise physically separated from the alarm device 112.

In some embodiments, detecting that the wearable component has separated from the housing can include determining a signal strength of a wireless tether signal transmitted by a wireless transmitter of the wearable component to a wireless receiver arranged within the housing and in communication with the separation detector, the signal strength being representative of a distance between the wearable component and the housing, and determining that the signal strength is less than or equal to a predetermined signal strength defining a predetermined separation distance. For example, the separation sensor arrangement 118 can determine that the wearable component 120D has exceeded a threshold separation distance from the alarm device 112, or that a periodic beacon transmitted by the wearable component 120D has not been received for a predetermined length of time.

At 3640, an alarm device is activated based on detecting that the wearable component has separated from the housing. For example, the alarm device 112 of FIG. 7 can be activated. In some embodiments, activating the alarm device can include transmitting an alarm signal; and wherein the process 3600 can also include receiving, by mobile device, the alarm signal, and sending, by the mobile device and in response to the receiving the alarm signal, a predetermined communication to one or more predefined recipients. For example, the alarm device 112 of FIG. 7 can activate the communication interface 134 to communicate with the mobile phone 200. The mobile phone 200 may have a software application installed and executing thereupon, and the software application can be configured to react to the communication from the mobile device accessory 100E to cause the mobile phone to communicate with one or more predetermined recipients. For example, the software application may be configured to initiate a call, send a text message, email, media file, media stream, location information (e.g., GPS data), captured audio and/or video, or any other appropriate information to one or more contacts previously identified by the user (e.g., family member, friend, neighbor, doctor, nurse, caregiver, welfare official, emergency services, 911)

In some embodiments, activating the alarm device can include activating an audio output component disposed within the housing and configured to emit an audible alert when activated. For example, the alarm device 112 includes the audio output device 114 that can emit a siren, noise, prerecorded or synthesized spoken words or other sounds, or any other appropriate sound that is sufficiently loud enough to attract the attention of other nearby persons and/or repel an attacker. In some embodiments, activating the alarm device can include activating a visual output configured to emit an audible alert when activated. For example, the alarm device 112 includes the light output device 116 that can emit a light or strobe to attract the attention of other nearby persons and/or repel an attacker.

In some embodiments, the process 3600 can include removing the wearable component from a cavity defined by the housing, wherein the cavity is sized to accommodate storage of the wearable component. For example, FIGS. 22A-22F show that the example wearable component 120I can be at least partly removed from the mobile device accessory 100I before being worn about the wrist of the user. In some embodiments, the process 3600 can also include doffing the wearable component from the user, and stowing the wearable component in a cavity defined by the housing, wherein the cavity is sized to accommodate storage of the wearable component. For example, the process illustrated by FIGS. 22A-22F can be reversed such that the user can take the wearable component 120I or 120L off his or her wrist, and placed back in the groove 209 or 2909 defined in the housing of the mobile device accessory 100I or 100L.

In another configuration, the mobile device accessory need not be configured to be physically attachable to the mobile device, but rather may be implemented as a standalone unit that can be carried or worn by a user (e.g., as a wallet attachment or insert, key fob, bracelet, or the like), and which maintains a wireless communication connection between the accessory and the mobile device. In this configuration, other than the lack of physical attachment, the accessory can be designed and implemented to have any or all of the same features and/or functionality as the configuration in which the accessory is designed to be attached to the mobile device, as described above.

Although a few implementations have been described in detail above, other modifications are possible. For example, the logic flows depicted in the figures do not require the particular order shown, or sequential order, to achieve desirable results. In addition, other steps may be provided, or steps may be eliminated, from the described flows, and other components may be added to, or removed from, the described systems. Accordingly, other implementations are within the scope of the following claims. 

What is claimed is:
 1. A mobile device accessory, comprising: a housing defining an attachment surface that is configured to mechanically engage a mobile device; a connectivity sensor comprising a removable connector and configured to indicate a loss of connectivity when the removable connector is at least partially removed by pulling an attached tether or by using a fingernail slot in the removable connector; and, an alarm device disposed in the housing and configured to activate in response to an indication, by the connectivity sensor, of a loss of connectivity, wherein activation of the alarm device causes an audible alert to be emitted from the mobile device accessory, and a software application to be executed on the mobile device.
 2. The mobile device accessory of claim 1, wherein the user activation mechanism is configured to at least partly release from the housing when the user input mechanism exceeds a predetermined separation distance from the housing.
 3. The mobile device accessory of claim 1, wherein the attached tether has a predetermined length configured to mechanically attach to the removable connector, and configured to mechanically open the removable connector, at least in part, when a distance between the user activation mechanism and the removable connector exceeds the predetermined length.
 4. The mobile device accessory of claim 1, further comprising a wearable component having a wireless transmitter configured to transmit a wireless tether signal, and the connectivity sensor further comprises a wireless receiver configured to receive the wireless tether signal at a received signal strength that is representative of a distance between the wireless transmitter and the housing, and detect separation of the wearable component from the housing based on a comparison of the received signal strength to a predetermined signal strength defining a predetermined separation distance.
 5. The mobile device accessory of claim 1, wherein the software application comprises instructions stored in a memory device of the mobile device, that when executed by a data processing apparatus of the mobile device cause the mobile device to perform operations comprising: sending, in response to the detection that the connectivity sensor has been activated, a communication to one or more recipients.
 6. The mobile device accessory of claim 5, the operations further comprising determining, by the mobile device, a location of the mobile device, wherein the communication includes location data that is descriptive of the determined location.
 7. The mobile device accessory of claim 1, further comprising a user activation mechanism configured to be activated by a user of the mobile device accessory, wherein the alarm device is further configured to activate in response to movement of the user activation mechanism along a predefined non-linear path.
 8. The mobile device accessory of claim 7, wherein the user activation mechanism comprises a button integrated with the housing.
 9. The mobile device accessory of claim 1, wherein the removable connector comprises a component that is at least partially separable from the mobile device accessory.
 10. The mobile device accessory of claim 1, wherein a surface of the housing defines a groove formed about the periphery of the housing and sized to accommodate storage of the attached tether.
 11. The mobile device accessory of claim 1, wherein the housing defines a recess sized to accommodate the removable connector, and the removable connector is configured to be substantially flush with the housing when the removable connector is inserted.
 12. The mobile device accessory of claim 1, wherein the attachment surface comprises an adhesive pad configured to adhesively engage the housing to the mobile device.
 13. The mobile device accessory of claim 1, wherein the housing comprises four or more slanted sides extending between the attachment surface and an outer surface of the housing, and four or more rounded corners, wherein the slanted sides and the rounded corners provide an angular profile.
 14. A mobile device accessory comprising: (a) a housing defining an attachment surface that is configured to engage a mobile device, the engagement including both a physical attachment to the mobile device and a communications connection to the mobile device for controlling operation of the mobile device; (b) a connectivity sensor comprising a removable connector and configured to indicate a loss of connectivity when the removable connector is opened by pulling an attached tether or using a fingernail slot; and (c) control circuitry to control operation of the mobile device accessory, the control circuitry configured to perform operations comprising: (i) detect an indication, by the connectivity sensor, of a loss of connectivity; and (ii) in response to the detection, cause an audible alert to be emitted from the mobile device accessory, and a software application to be executed on the mobile device.
 15. The mobile device accessory of claim 14, wherein the communications connection to the mobile device comprises a wireless connection.
 16. The mobile device accessory of claim 15, wherein the wireless connection comprises a BLUETOOTH connection.
 17. The mobile device accessory of claim 14, wherein controlling operation of the mobile device comprises communicating with a software application executing on the mobile device.
 18. The mobile device accessory of claim 14, wherein the control circuitry comprises a processor and a memory containing machine instructions to be executed by the processor.
 19. The mobile device accessory of claim 14, further comprising a user activation mechanism configured to be activated by a user of the mobile device accessory and comprising a pull tab component physically connected to the mobile device accessory and configured to at least partly release from the housing by the user of the mobile device accessory, wherein the alarm device is further configured to activate in response to user activation of the user activation mechanism.
 20. The mobile device accessory of claim 19, wherein the user activation mechanism comprises a button integrated with the housing.
 21. The mobile device accessory of claim 14, wherein detecting that the user activation mechanism has been activated comprises detecting at least partial opening of the removable connector.
 22. The mobile device accessory of claim 14, wherein the attached tether is mechanically coupled to the removable connector.
 23. The mobile device accessory of claim 22, wherein detecting that the user activation mechanism has been activated comprises detecting that the removable connector has been at least partly opened when a wearable component of the tether has moved away from the removable connector by distance that exceeds a length of the tether.
 24. The mobile device accessory of claim 14, wherein the software application, when executed on the mobile device, causes the mobile device to perform one or more of the following operations: initiating a communication with another communication device, activating a camera on mobile device, activating a microphone on the mobile device, emitting an audible sound, or turning on location detector.
 25. The mobile device accessory of claim 24, wherein initiating a communication with another communication device comprises sending one or more predetermined messages to one or more predetermined recipients.
 26. The mobile device accessory of claim 25, wherein the predetermined message comprises one or more of: a distress message, positioning coordinates, audio captured by mobile device, and video captured by the mobile device.
 27. The mobile device accessory of claim 24, wherein initiating a communication with another communication device comprises initiating one or more of: a telephone call, an email, and a text message.
 28. The mobile device accessory of claim 14, wherein removable connector comprises a component that is at least partially separable from the mobile device accessory.
 29. A mobile device accessory comprising: (a) a communication mechanism configured to physically engage a mobile device configured to maintain a wireless communications connection between the mobile device accessory and the mobile device for controlling operation of the mobile device; (b) a connectivity sensor comprising a removable connector and configured to indicate a loss of connectivity when the removable connector is opened by pulling an attached tether or using a fingernail slot; and (c) a control circuit configured to control operation of the mobile device accessory, the control circuit at least partly disposed within the communication mechanism and configured to perform operations comprising: (i) detect an indication, by the connectivity sensor, of a loss of connectivity; and (ii) in response to the detection, cause an audible alert to be emitted from the mobile device accessory, and a software application to be executed on the mobile device.
 30. The mobile device accessory of claim 29 further comprising an alarm mechanism configured to provide the audible alert as a human-perceptible alarm in response to a detection that the user has activated the alarm mechanism.
 31. The mobile device accessory of claim 29 further comprising an activation mechanism integrated with the housing and configured to be activated by a user of the mobile device accessory and comprising a button that is pressable by the user, or a user activation mechanism that is configured to be activated by the user, or both, and wherein the activation mechanism is caused to be activated upon either of a button press or at least a partial physical release of the user activation mechanism from the mobile device accessory and the alarm device is further configured to activate in response to user activation of the user activation mechanism. 